Bug: border-collapse rendered incorrectly

## Comparison: FIrefox (left) vs blitz (right)

## Example: https://docoxide.github.io/fixtures/border-collapse.html
```html

border-collapse

table {
border: 2px solid black;
margin-bottom: 2rem;
}
th,
td {
border: 2px solid black;
padding: 0.5rem 1rem;
}

.collapse {
border-collapse: collapse;
}
.separate {
border-collapse: separate;
}





Name
Age


Alice
30


Bob
25

Name
Age


Alice
30


Bob
25

```